Signal processing is a vast topic... we present here the simplest building blocks.

1. PWM
2. Sigma-delta modulator
3. One-bit DAC

What's next?

• An Introduction to Delta Sigma Converters
• PWMs are widely used with microcontrollers; see for example AVR131 from Atmel

• PWM DAC 1 - PWM (Pulse Width Modulation) ❯